This happened to me, too. After emailing customer support several times asking for clarification, and getting the same uninformative answer every time, I decide

This happened to me, too. After emailing customer support several times asking for clarification, and getting the same uninformative answer every time, I decided to take down the (free) extension (which had 20,000+ users) rather than risk having my developer account deactivated for uploading a rejected extension too many times. I use Pushbullet every day, and would be gutted if it were killed for such a ridiculous reason as this.